E-flite Viking Model 12 280 BNF Basic - Manual (Page 10)

10
EN
Control Centering
Before the fi rst fl ights, or in the event of an
accident, make sure the fl ight control surfaces
are centered. Adjust the linkages mechanically if
the control surfaces are not centered.
Lower Ailerons, Rudder and Elevator
1. Reset sub-trims to zero. Ensure the servo
arms are as perpendicular to the servo case as
possible. Use sub-trim to fine-tune as needed.
2 When needed, use a pair of pliers to carefully
bend the metal linkage (see illustration).
3. Make the U-shape narrower to make the
linkage shorter. Make the U-shape wider to
make the linkage longer.
Upper Ailerons
1. When an adjustment of linkages is needed, pull
the tube from the clevis to the linkage.
2. Carefully spread the clevis and adjust the
length of the linkage by screwing the clevis in
or out. Reattach the clevis in the proper hole in
the control horn.
3. Move the tube to tighten the clevis onto the
control horn.
Centering Controls After First Flights
For best performance with AS3X, it is important
that excessive trim is not used.
IMPORTANT: Only trim this aircraft in Precision
Flight Mode.
If the model requires excessive transmitter trim
(4 or more clicks of trim per channel), return the
transmitter trim to zero and adjust the linkages
mechanically so that the control surfaces are in the
fl ight trimmed position.
Control Horn and Servo Arm
Settings
This illustration shows the factory settings for
linkages on the control horns and servo arms.
After fl ying, you may choose to adjust the linkage
positions for the desired control response.
Horns Servo Arms
Elevator
Rudder
Ailerons